Jar-closure.



L. RUFFNER.

JAR CLOSURE. APPLICATION HLED SEPT. 16. 1914.

1,147,190. PatentedJlily 20, 1915 gwue wtoz why/FM.

COLUMBIA PLANOORAPH C0., WASHINGTON. D. c.

LESLIE UFFNEn, or INDrANAQrENNsYIJvAN IAQ v A LO RE.

Application filed September 1s, 1914. Serial No. 862,019 a To all whomit may concern:

Be it known that I, LESLIE RU'FFNER, a citizen of the United States,residing at Indiana, in the county of Indiana and State of Pennsylvania,have invented certain new and useful Improvements in J ar-Closures, ofwhich the following is a specification.

This invention relates to jar closures and more particularly to aclosure of the screw cap type.

The object of the invention is to provide a closure of this nature soconstructed as to present a considerable bearing surface at its loweredge and to combine therewith a rubber packing ring of peculiarformation coacting with the cap to provide a fluid tight joint betweenthe body of the jar and the lower edge of the screw cap.

Further objects and advantages of the invention will be set forth in thedetailed description which now follows.

In the accompanying drawing? Figure 1 is a vertical sectional view of ajar having the improvements applied thereto, and Fig. 2 is a plan viewof the rubber ring.

Like numerals designate corresponding parts in all of the figures of thedrawing.

Referring to the drawing the numeral 5 designates the body and 6 theneck of a fruit jar of the usual and well known type having asubstantially horizontal shoulder 7 between the body and the neck. Jarsof this type are provided with screw caps 7 and millions of these jarsare in use among housewives at this time and it may be here stated thatit is a particular object of the present invention to so construct thenew screw cap and rubber that it may be used upon the jars already inuse. Y

In carrying out the invention I provide a flat packing ring 8 preferablyof rubber and provided with a semi-circular or oval rib upon its upperface adapted to enter a correspondingly shaped recess in the under faceof thescrew cap. To provide for this recess I out-turn themetal of thelower edge of the cap and'form the recess 9 therein and within whichrecess the rib 1O lies when the cap is screwed upon the jar ashereinbefore stated. In the jars of this nature with which I am familiarithas been customary to provide a perfectly flat rubber ring without anupstanding rib thereon andvagainst which ring the sharp lower edge ofthe screw cap is forced with great pressure when the cap is placed uponthe jar. With such structure the rings. are sometimes cut by the edge ofthe cap and at other times they creep under the turning action of thecap so that the cap does not contact with them all around and air ispermitted to enter the jar with the result that the contents thereofferment and spoil.

By out-turning the lower edge of the sheet metal screw cap to form thehorizontal flange 11 a flat and wide surface is opposed to the shoulder7 between which the rubber ring is clamped without the danger ofthecutting thereof and the provision of the rib 10 holds the parts inproper alinement while the cap isbeing screwed into place, preventstransverse creeping of the ring and aids in the formation of a tightjoint.

From the foregoing description it will be i seen that simple'andefficient means are herein provided for'accomplishing the objects of theinvention but while the elements shown and described are well adapted toserve the purposes for which they are intended it is to be understoodthat the invention is not limited to the precise'construction set forthbut includes within its purview such changes as come within the scopeofthe appended claims.

Having described my invention what I claim is e 1. In a device of thecharacter described the combination with a jar comprising a body portionand a threaded neck portion with a horizontal shoulder therebetween, of.

LESLIE RUFFNER. Witnesses F. W. STEHR, J. A. CRossMAN.

body portion and a threaded neck portion with a horizontal shouldertherebetween, of a sheet metal screw cap having its lower edgeout-turned to provide a horizontal flange, said fiangehaving anunderside annular recess therein and a paokingring of rubber comprisinga flat body portion Which When in use is clamped between said flangeCopies of this patent may be obtained for fivecents each, by addressingthe Commissioner of Patents, Washington, I). G.

